On my desktop Dell computer, running Windows XP Service Pack 3 and IE8 when I try to navigate between the Trains Forum and the Classic Trains Forum I get a error from IE8 that is has to close and restart itself.  When it restarts I am able to access the Classic Trains Forum.  This appears to occur every time I move from the Trains Forum to the Classic Trains Forum. 

I do not have the same experience when using my laptop Dell that is running Vista and IE8.